Question: What astronaut mission of human spaceflight did Christa McAuliffe do?
Paraphrase: Christa McAuliffe was an astronaut on which mission of human spaceflight?
SPARQL (Wikidata):  select distinct ?obj where { wd:Q229674 wdt:P450 ?obj . ?obj wdt:P31 wd:Q752783 } 
Answer: STS-51-L